docstr: Tests that the shape exceptions are not raised.
docstr_tok: ["Tests","that","the","shape","exceptions","are","not","raised","."]
code: def test_loss_not_raised(self, *shapes):
      """Tests that the shape exceptions are not raised."""
      self.assert_exception_is_not_raised(matting.loss, shapes)
  
imports: from absl.testing import parameterized
  import numpy
  import tensorflow
  from tensorflow_graphics.image import matting
  from tensorflow_graphics.util import asserts
  from tensorflow_graphics.util import shape
  from tensorflow_graphics.util import test_case
label_desc: Use image node_id 12 for calling the MattingTest obj's underlying member method code with example usage: obj.test_loss_not_raised() without return types